Wes McCauley is a patient referee with very sound judgment. He is not one to overreact. I can guarantee that there was way too much being said from the penalty box, the players' bench and on the ice by the Penguin players that resulted in the unsportsmanlike conduct and misconduct penalty that was assessed to Kunitz at the end of the period. There was absolutely no need for Kunitz to go out of his way to slide the puck in the direction of referee McCauley who was standing at the Zamboni entrance waiting to exit the ice. When players engage in excessive whining and complaining, as it appeared the Penguins did in the first period, the referee will stop the 'drip' and shut off the tap by imposing a penalty. Teams can develop a reputation for whining no differently than players do for diving and embellishment.
The Penguins have earned the undesirable reputation with several of the referees for having too much to say. As a team, they need to turn off the tap on their own as they move toward the playoffs. The referees' patience has already worn thin.